Biodegradability enhancement of wastewater containing cefalexin by means of the electro-Fenton oxidation process

Estrada, Adriana Ledezma; Li, Yu-You; Wang, Aimin

doi:10.1016/j.jhazmat.2012.04.079

Cited by 147 publications

(26 citation statements)

References 42 publications

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“…A similar tendency of the limiting value for current intensity was also reported by previous studies on the electro-Fenton process with different process setups [14,47]. It is noticeable that high current intensity may have certain adverse effects on the degradation efficiency apart from significant energy consumption, which consequently implies high operational costs.…”

Section: Optimal Operating Parameters: Degradation Vs Mineralizationsupporting

confidence: 84%

“…The mechanism of the reactions involved in this process and its basics are well described and analyzed in several recent review papers [8,9]. Electro-Fenton has been rather well-researched and proved to be able to effectively remove different pollutants such as: pesticides [10], dyes [11,12], pharmaceuticals [13,14] and other organic pollutants [15].…”

Section: Introductionmentioning

confidence: 99%

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Removal of psychoactive pharmaceutical caffeine from water by electro-Fenton process using BDD anode: Effects of operating parameters on removal efficiency

Ganzenko

Oturan

Huguenot

et al. 2015

Separation and Purification Technology

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Section: Optimal Operating Parameters: Degradation Vs Mineralizationsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Removal of psychoactive pharmaceutical caffeine from water by electro-Fenton process using BDD anode: Effects of operating parameters on removal efficiency

Ganzenko

Oturan

Huguenot

et al. 2015

Separation and Purification Technology

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“…This diagram exhibits a maximum, which can be due to the aggregation of the substrate particles at higher dosage or the increase in the turbidity of the solution that lowers the penetration of UV light and thus reduces further oxidization of dye molecules. Another possible explanation may be the formation of excessive amounts of hydroxyl radicals with a higher dosage of the catalyst, which can react together to form a much weaker oxidant such as H 2 O 2 …”

Section: Resultsmentioning

confidence: 99%

“…This can be explained by the fact that in concentrated solution, UV radiation cannot penetrate through the solution to reach the substrate or photocatalyst nanoparticles. Another possible explanation can be that highly concentrated dye molecules around the photocatalyst nanoparticles will not allow the UV radiation to reach TiO 2 nanoparticles, which eventually results in the formation of fewer oxidative radicals to decolor the solution …”

Section: Resultsmentioning

confidence: 99%

Titania/gum tragacanth nanohydrogel for methylene blue dye removal from textile wastewater using response surface methodology

Rahimdokht

Pajootan

Ranjbar‐Mohammadi

2018

Polymer International

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The aim of this study was to statistically evaluate the capability of a prepared TiO2/gum tragacanth hydrogel as a photocatalyst for the removal of methylene blue dye molecules from contaminated solutions. In this regard, TiO2 nanoparticles were sonicated in gum tragacanth and the final hydrogel was prepared by the addition of glutaraldehyde as a crosslinking agent. Response surface methodology was employed as a mathematical and statistical tool to describe the system by a polynomial equation that relates the removal efficiency to selected variables (time, pH, initial dye concentration and photocatalyst dosage). The significance and adequacy of the model were confirmed by high coefficient of determination (R2) and adjusted R2 values (>93%). The system was optimized at an initial dye concentration of 9.37 mg L−1, pH of 9.02, time of 124.34 min and photocatalyst dosage of 0.13 g L−1 using the response optimizer with an efficiency of 88.86%. A kinetic study of photocatalytic decoloration indicated that the pseudo‐second‐order model was well fitted to the experimental data. © 2018 Society of Chemical Industry

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“…AOPs have been largely studied as pretreatment of biological systems, in order to enhance wastewater biological treatability [36,37]. Similarly, AOPs can be used as posttreatment to complete the degradation partially provided by biological processes [38,39].…”

Section: Introductionmentioning

confidence: 99%

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

Cesaro¹,

Belgıorno²

2016

TOBIOTJ

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Abstract:Over the last years the growing presence of endocrine disrupting compounds in the environment has been regarded as a serious sanitary issue. The more and more frequent detection of these compounds in the effluents of wastewater treatment plants poses the risk associated to their persistence into the aquatic systems as well as to their adverse effects on both public health and environment.As conventional systems do not allow their efficient removal, great attention has been raised towards their possible treatment by Advanced Oxidation Processes (AOPs). They rely on the action of hydroxyl radicals, which are highly reactive species, able to oxidize recalcitrant and non-biodegradable pollutants.AOPs can either provide contaminant partial degradation or their complete removal. As their effectiveness has been proved for a wide spectrum of both organic and inorganic pollutants, they are considered a suitable option for the treatment of contaminated aqueous media, especially when combined with conventional biological processes.This paper aims at reviewing main AOPs for the removal of endocrine disruptors, in order to highlight the most important features of different technologies, thus providing their comparative assessment. To this end, a brief overview of the most frequently detected endocrine disruptor compounds was also discussed, in order to clarify their fate into the environment as well as the contamination pathways of greatest concern for human health.

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Biodegradability enhancement of wastewater containing cefalexin by means of the electro-Fenton oxidation process

Cited by 147 publications

References 42 publications

Removal of psychoactive pharmaceutical caffeine from water by electro-Fenton process using BDD anode: Effects of operating parameters on removal efficiency

Removal of psychoactive pharmaceutical caffeine from water by electro-Fenton process using BDD anode: Effects of operating parameters on removal efficiency

Titania/gum tragacanth nanohydrogel for methylene blue dye removal from textile wastewater using response surface methodology

Removal of Endocrine Disruptors from Urban Wastewater by Advanced Oxidation Processes (AOPs): A Review

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